Merge pull request #263 from dusk-network/disable_std #509

Job	Run time
test cirucits / Run tests	2m 56s
Dusk Analyzer / Dusk Analyzer	20s
Code Analysis / Clippy Check	16s
Code Analysis / Rust Format	6s
test cirucits no-default-features / Run tests	18s
test core / Run tests	17s
test core rkyv compiles / Run tests	12s
	4m 25s

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